Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Gretchen B Adams, RDH

Dental Hygienist in Lebanon, NH · enumerated 2006 · practices at Upper Valley Speech-Language Services.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1790701290

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Registry record

Entity type Individual (Type 1)

Name Mrs. Gretchen B Adams

Credential RDH

Sex Female

Practice address 1 Court St, Suite 270, Lebanon, NH, 03766

Phone (603) 448-1830

Fax (603) 448-1826

Enumeration date Jul 15, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

124Q00000X Dental Hygienist Dental Providers · License 1724 (NH) Primary

Other identifiers

Identifier	Type	State	Issuer
1724	Other	NH	RDH

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Gretchen Adams?

Gretchen Adams is registered in NPPES with the primary taxonomy of Dental Hygienist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.